Sanitary fitting or coupling for pipes.



I. H. KENDALL.

SANITARY FITTING 0R COUPLING FOR PIPES. AP LICATION man JULY 20. 1918.

1,301,453. Patented Apr. 22, 1919 V J $11M WITNESS INVENTOI? M A TTORIVEYS sanitary fittin UNITED STATES PATENT OFFICE.

IRA HUNT KENDALL, OF PO-TSDAM, NEW YORK.

SANITARY rrrrme on. courrmc roa PIPES.

Specification of Letters Patent. Patented Apr. 22, 1919.

Application filed July 20, 1918. Serial No. 245,905.

To all whom it may concern:

Be it known that "I, IRA H. K NDA L, a citizen of the United States, residing at Potsdam, in the count of St. Lawrence and State of New York, ave invented certain new and useful Improvements in Sanitary Fittings or Couplings for Pipes, of which the following is a specification.

My invention relates to a sanitary fitting H may or coupling for pipes used in conveying liquids and more particularly for pipes used in creameriesand other establishments for conveying milk, where the utmost cleanli-.

ness must be observed.

.Couplings for connecting pipes running in oppositedirections are old and wellknown. These must be cleaned frequently in creameries and other establishments plings are 'no longer tight after a short.

period of use.

The. object of my invention is to secure a which will depend upon a ground joint or its tightness, without any packing or the like, and in which the joint shall be so placed that it will not be affected by the grinding of the wire handle of the cleaning brush now in ordinary use.

. Other objects of my invention will be disclosed in the following descri tion and drawings which illustrate a pre erred em bodiment thereof.

Figure 1 is a central vertical section with some of the parts in elevation. Fig. 2 is a perspective view.

1 where a high standard of cleanliness is obl 20 Fig. 3 is a side elevation of the two cou- A pling members. I Flg. 4 is an enlarged sectional view of the joint between the coupling members.

Fi 5 is a perspective view of the bolt whic connects the coupling members.

The device consists essentially of coupling members A and A which have a general hemispherical contour and are rovided with 5 cylindrical projections G an I G for connecting to ther pipes that may be joined thereto, an with threaded'radial cylindrical projections, which are on the same diameter so that a bolt B having threaded ends H and fit into the two last mentioned proectlons, said threaded ends H andH projecting from the couplings and being secured by'members C and C, both of which may be wing-nuts. If desired, one of them can be an ordinary lock-nut or the like or be made integral with the bolt itself.

The oint between the coupling members A and A is more particularly shown in Fig. 4. As can be seen from this figure, members A and A, are respectivel ground on the surfaces D and D, and t ese ground surfaces are adjacent lips E and F, and F and E; These lips have cylindrical faces parallel to bolt B, and disk-like faces perpendicular thereto. 1

This joint is so ground that'the faces D and D, as well as said lips are identical in dimensions and all other respects, so that as shown in Fig. 1, when the c'oupling members A and 'A are forced together by means of the bolt B and the locking members 0 and As can be seen in Fig. 1, the end disk-like r faces of the said lips are perpendicular to the axis of the bolt B. By means of this, when the coupling members A and A are strongly forced together, a very tight joint is formed and if desired, by loosening the locking members co-acting with the bolt B, either one of the coupling members can be revolved about the bolt B as a pivot, and then refastened in any other position desired, while a perfectly tight joint will be maintained.

This is illustrated in the drawings in which the coupling members are shown in different relative positions in Figs. 1 and 2.

Experience has shown that this form of joint is perfectly tight and requires no packing, is efiicient in all positions of the coupling members and is not worn out by the wire handle of the cleanin brush. It thus obviates one of the vexatious annoyances heretofore present in this type of coupling, and presents marked economies both in preventing loss of the fluid passing through the I perpendicular to the axis of the bolt B.

However, changes and omissions may be mad in this ground joint so formed, as Well as in the other parts of my invention, without departing from its spirit.

.I claim v v 1. In a pipe coupling, coupling members having partsthereof shaped like a sphere of the same radius, and means for forcing the said coupling members together along a diameter of the said sphere, the said cou-" pling members having ground conical faces which are parallel to each other, the axes of the said conical faces being coincident with the said diameter, the said conical faces being symmetrically disposed with respect to a diameter v perpendicular to the first mentioned diameter.

2. In a pipe coupling, coupling members having parts thereof shaped like a sphere of the same radius, and means for forclng said coupli members together along a diameter of the said sphere, the said coupling members each having ground conical faces equally inclined to a diameter perpendicular to the first mentioned diameter, the axes of the said conical faces being coincident with the first-mentioned diameter, the said couplin members having lips comprising cylindrica faces and disk-like faces perpendicular thereto above and below the said conical faces, the axes of the said cylindrical faces bein coincident with the said first mentioned dlameter, the ground faces of one coupling member having dimensions identical with the adjacent ground faces of the other coupling member.

3. In a pipe coupling, coupling members having parts thereof shaped like a sphere of the said radius, cylindrical projections projecting from the said spherical parts, the faces of the said cylindrical projections bein coincident with a diameter of the said sp' ere, a bolt coincident with the said diam ing symmetrically disposed with respect to the diameter perpendicular to the axis of the bolt, said coupling members having lips comprislng cylindrical faces and disk-like faces perpendicular thereto above and below the said conical faces, the axes of the said cylindrical faces bein coincident with.the axis of the said bolt, 1; e ground face of one coupling member having dimensions identical with the ground face of the otherwoupling member.

In testimony whereof I hereunto affix my signature.

IRA HUNT KENDALL. 

